I take a asprin a day and now I am feeling sick swollen glands low grade fever etc. Can intake Advil or tylenol (acetaminophen)? Don't know any interactions

Tylenol (acetaminophen) OK. It's perfectly fine to take tylenol (acetaminophen) if you are taking aspirin, and short term would be ok to take some Ibuprofen although you don't want to be mixing nsaid's long term as it can lead to a lot of GI upset. Make sure to rest more and drink plenty of fluids.